Diffusion of gases, Biology

Assignment Help:

Diffusion of Gases

Gases diffuse from areas of higher partial pressure to areas of lower partial pressure. The diffusion along the partial pressure gradient ceases only when the partial pressure in both areas becomes equal. This is true in aquous solutions: within mixtures of gases and across gas-water inter phase. Very seldom diffusion in direction of partial pressure gradient also means diffusion along a concentration gradient. In later sections we shall see how the movement of oxygen and carbon dioxide depends on the partial pressure gradient that exists at the inter phase between vascular: fluids and air in lungs. Within the body at the capillary level the intracellular fluids and vascular fluids develop opposed partial pressure gradients and hence gases move opposite directions.

Having studied the physical basis of gas diffusion we can now proceed to see how animals exchange gases across their respiratory surfaces. First, we shall discuss various arrangements for respiratory gas exchange in animals.


Related Discussions:- Diffusion of gases

When the carbon dioxide concentration is increased, Why is the carbon dioxi...

Why is the carbon dioxide concentration a limiting factor of the photosynthesis process? When the carbon dioxide concentration is increased indefinitely is photosynthesis also incr

Explain about amino acids, Do the -R groups bound to the central carbons pa...

Do the -R groups bound to the central carbons participate in the union among amino acids? The peptide bond attaches the nitrogen of the amine group of one amino acid to the car

Effect of alcoholic beverage, Q. Why does the urinary volume increase when ...

Q. Why does the urinary volume increase when alcoholic beverages are ingested? Alcohol inhibits the ADH (antidiuretic hormone) secretion by the hypophysis and Low ADH reduces t

Pulsatile perfusion-type of blood pump, Pulsatile Perfusion: Conventional...

Pulsatile Perfusion: Conventional pumps give continuous flow with very little pulsatile property. Pulsatile perfusion is likely to result in better post operative renal and cardi

Open heart surgery , Open Heart Surgery These surgeries are done unde...

Open Heart Surgery These surgeries are done under alternative arrangements to continue oxygenated systemic blood supply, while the heart is operated on (Cardiopulmonary bypas

What type of membrane is the cell membrane, Concerning permeability what ty...

Concerning permeability what type of membrane is the cell membrane? The cell membrane is a selectively permeable membrane, i.e., it permits the passage of water and some select

Explain the protease inhibitors, Explain the Protease Inhibitors? These...

Explain the Protease Inhibitors? These are protein in nature and are abundant in raw cereals and legumes, especially soybeans. It would be interesting to note here that since t

Functions of iron in the body, functions of iron in the body: Iron i...

functions of iron in the body: Iron is the major component in haemoglobin. It helps to carryout oxygen from lungs to the tissues. About 60 to 70% of Iron in the body i

Design a controlled experiment, Design a controlled experiment to test the ...

Design a controlled experiment to test the hypothesis that acid precipitate inhibits the growth of elodea, a common freshwater plant.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd